In this task, you are given an article. Your task is to summarize the article in a sentence.

Q: Media playback is not supported on this device
Michael Shenton and Jake Webster scored tries inside the first 11 minutes for Cas, before Ryan Morgan closed the gap.
St Helens were left stunned when Webster grabbed a second, while Paul McShane, Greg Minikin and Nathan Massey scored as Cas led 31-4 at half-time.
Greg Eden had a second-half hat-trick and Minikin ran 70 metres, while Luke Douglas scored St Helens' consolation.
Castleford, four-time winners of the Challenge Cup, scored six tries in 17 minutes either side of half-time to rip the heart out of St Helens.
After a tight opening, Cas, who have a one-point lead at the top of Super League, blew St Helens away with four tries in seven minutes to take a 27-point half-time lead.
Webster gathered a brilliantly lofted pass by Ben Roberts, and Eden's clever run was the catalyst for McShane to sneak over.
Roberts' run and perfectly judged kick-through was finished off by Minikin, while Massey dived over under the posts.
Castleford came out after the break in the same fashion and Eden scored a second-half hat-trick.
The Castleford-born full-back spectacularly jumped in one-handed in the left-hand corner, ran in unchallenged in the same corner and then took a Zak Hardaker pass to score his 18th try of the season.
Minikin burst through from 70 metres for his second, while Douglas powered in under the posts for a consolation for St Helens.
Castleford's victory was their first against St Helens in six matches, a run stretching back to June 2015 when their last victory was a narrow one-point success in the Super League.
It was also Castleford's first Challenge Cup victory between the two sides since they won the 1970 semi-final 6-3 on their way to the second of back-to-back Challenge Cup titles.
St Helens, who have won the last three cup meetings, never looked likely to reach the last eight and add to their 12 Challenge Cups.
Castleford's Luke Gale:
"I think we are a group of players who enjoy playing football together. We have fun at training and we bring it onto the pitch as well.
"This was an outstanding performance and that's what we have in the locker.
"Last season we were criticised for our defence and we knew pre-season we had to work on our defence and I think we have done that.
"We enjoy throwing that ball about and you can tell with our performance."
St Helens caretaker coach Jamahl Lolesi:
"Unfortunately we're in a bit of a hole at the moment. It's a little bit worrying. We've got some issues we need to sort out.
"We didn't compete hard for 60 minutes of last week's game and probably 80 minutes of today's game.
"We've a group of young men who will need to stand up and start doing better for the club."
Castleford: Hardaker, Minikin, Webster, Shenton, Eden, T. Holmes, Gale, Lynch, McShane, Millington, Sene-Lefao, McMeeken, Milner.
Replacements: Massey, Roberts, Moors, Cook.
St Helens: Makinson, Swift, Percival, Morgan, Grace, Fages, Smith, Walmsley, Roby, Douglas, Taia, Knowles, Thompson.
Replacements: Amor, Wilkin, McCarthy-Scarsbrook, Richards.
Referee: Phil Bentham (RFL).

A: Castleford put on a masterclass to beat St Helens and book a place in the Challenge Cup quarter-finals.
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Q: Keanu Marsh-Brown's second goal in two games was enough as he broke the deadlock, just when it looked like Braintree might survive through to the interval.
With 19 minutes to go the hosts had a golden opportunity to earn a point but Russell got down well to his left to deny Chez Isaac from the penalty spot.
Mark Cooper's side remain second in the table, one point behind leaders Dagenham, while Braintree stay 22nd.
Report supplied by the Press Association.
Match ends, Braintree Town 0, Forest Green Rovers 1.
Second Half ends, Braintree Town 0, Forest Green Rovers 1.
Substitution, Forest Green Rovers. Aarran Racine replaces Liam Noble.
Liam Noble (Forest Green Rovers) is shown the yellow card.
Substitution, Forest Green Rovers. Kieffer Moore replaces Keanu Marsh-Brown.
Substitution, Braintree Town. Brandon Goodship replaces Sam Matthews.
Craig Braham-Barrett (Braintree Town) is shown the yellow card.
Christian Doidge (Forest Green Rovers) is shown the yellow card for a bad foul.
Substitution, Forest Green Rovers. Fabien Robert replaces Marcus Kelly.
Chez Isaac (Braintree Town) is shown the yellow card for a bad foul.
Dale Bennett (Forest Green Rovers) is shown the yellow card for a bad foul.
Second Half begins Braintree Town 0, Forest Green Rovers 1.
First Half ends, Braintree Town 0, Forest Green Rovers 1.
Goal!  Braintree Town 0, Forest Green Rovers 1. Keanu Marsh-Brown (Forest Green Rovers).
Michael Cheek (Braintree Town) is shown the yellow card for a bad foul.
First Half begins.
Lineups are announced and players are warming up.

A: Sam Russell saved a late penalty to secure victory for Forest Green at Braintree in the National League.
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Q: A 30-second mobile phone video of the performance has been watched nearly 800,000 times on YouTube.
The policeman had taken a break to sit down at one of the pianos placed around central Prague for public use.
Still wearing his bright green reflective vest, he rattled off a few bars of a South Korean composition.
Police chief Martin Cervicek said the clip of the officer playing River Flows In You, by the South Korean composer Yiruma, had done more to improve the image of the force than anything he himself would ever achieve.
The young traffic policeman only joined the force six weeks ago but it is fair to say he is now the most famous officer in the Czech Republic, the BBC's Rob Cameron reports from Prague.
Mr Cervicek said he had spoken to the officer, whose name has not been released, and wished him the same success in his police career.
A superior had spoken to the new recruit about what he could and could not do on duty, he added, but the piano-playing policeman was not formally disciplined.

A:
A Czech police officer who was filmed playing a piano while on duty has been lauded by the chief of police for boosting the force's image.
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